Mandrel for phonographic records.



PATENTED JULY 3, 1906.

W. H. GATES.

MANDRBL FOR. PHONOG-RAPHEG RECORDS.

APPLICATION FILED MAR.30,1905.

3 HRWWYSEME Wi 115mm: hates mmwtoz,

' UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed March 80, 1905. Serial No. 252,839.

To all whom it may concern.-

Be it known thatl, WILLIAM H. GATES, a citizen of the United States, residing at Norwich, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Mandrels for Phonographic Records, of which the followin is a specification.

his invention relates to record-supporting mandrels for use with talking-machines, my immediate object being to provide a removable mandrel in which provision is made for adjusting the record longitudinally relatively to the said mandrel.

Heretofore, so far as I am familiar with the art to which my present invention relates, it has been the universal practice to provide in talking-machines using c lindrical records a slightly tapering mandre that is fixedly secured to or formed as an integral part of the screw-shaft that operates the traveler upon which the reproducer is mounted. The cylindrical record is slipped upon said mandrel until it fits the same snugly, no provision being made for adjusting the record lengthwise. As I have stated above, my present invention provides for such adjustment, and thus makes 1t possible to so position the record with respect to the reproducer that the latter will be ,started into action sooner or later, as may be desired-that is to say, therecord may be readily and accurately positioned so that the reproducer will enga c it at any point throughout the length of said record and will begin s eaking at that articular point. In addit on tothis desira le result my present invention also anticipates the provision of automatic means for transferring records one at a time from a relay or magazine of records to the mandrel of talking-ma chines of this class and for removing said records after they have been used, my present improved form of mandrel being specially adapted for use with such automatic mechamsm.

My said invention is illustrated in the accompanying drawings.

Figure 1 is aside elevation of a phonographcase having mounted thereon the shaft which ordinarily receives the cylindrical record. The other operative parts of the machine are not shown, as they bear no immediate relation to my present invention. In this figure one of my newly-invented recordsupporting cylinders is also shown in posi tion to be slipped upon the said shaft. Fig.

' enga 2 is a relatively enlarged side view of a man drel embodying the essential features of my present invention, and Fig. 3 is a longitudinal central sectional view of said mandrel, showing also a record mounted thereon, as well as a portion of the shaft above referred to. View of said shaft at the point where it is intersected by a certain friction-plug g. Fig.5 is a transverse sectional view of the mandrel, taken on the line 5 5 of Fig. 2.

Referrin to the drawings, the letter a indicates a phonograph-case, and b the recordsu porting shaft revolubly mounted in suitable journal-bearings on said case and in such manner that an extended overhanging end portion of the shaft is provided, as shown. Ordinarily a slightly conical cylindrical mandrel of proper size to receive a record is fixedly secured upon or formed as a part of the extended end portion of shaft 5; but in my present invention I provide a readily-removable mandrel c, that is adjustably mounted upon a tubular core d, one of Whose ends is extended, as at d, and is preferably formed with an operating head or handle (2 The mandrel c is adapted to slide freely u on the core d, but is he d against accidenta or unintentional displacement by a frictionally- 8 acting stud e, mounted in the mandrel c, and is held, as here shown, in contact with the perimeter of the core d by a spiral sprin e.

The shaft 6 has fixed therein a stud ii that serves as a stop to position the core (2 on said shaft, and I also rovide in said shaft a spring-pressed friction-stud that serves to prevent the accidental disp acement of the core on the shaft when the parts are assembled for use.

When it is desired to utilize my described invention, a record is slip ed tightly upon the mandrel c, as seen in ig. 3 of the annexed drawin s. The tubular cored is then slipped upon t e shaft b until it abuts and is stopped by the stud The mandrel '0 ma then be slid lengthwise u on said core until the record is so positione with res ect to the reproducer that the stylus of the atter will e the record at the desired point. Thus be seen that by suitably adjusting the mandrel the machine will commence to speak at the beginning of a piece or at any desired point in said piece, and when the reproducer is again moved back to its startin position-11o.

(to repeat) it will always engage t e record at the same point Fig. 4 is a transverse sectional Having thus described my invention, I claim 1. A holder for talking-machine records, comprising a cylindrical non-tapered mandrel, a tubular cylindrical non-ta ered core upon which said mandrel is rea ily adjustable,

and extended and havin one end closed and formed with an integral operating handle, and a shaft having one end received in said tubular part, said mandrel and tubular part being capable of dual adjustment for the purposes'stated. I

2.. A holder drel, and an internal, tubular, support therefor; said support being adjustable on its shaft and mandrel being adjustable, longitudinally, relatively to said support, said tubular support being extended to provide a handle substantially as specified.

3. In combinatlon wlth the record-bearing shaft of-a talking-machine, a cylindrical non-tapered record-holder, and a tubular non-tapered support interposed between the said holder and shaft, said interposed supfor talking-machine records, consistlng of a cylindrical non-tapered manated frictionstud, a cylindrical mandrel, and 1 a tubular internal adjustable support for said mandrel, said support and mandrel being in-. dependently adjustable and a spring-actuated' friction-stud in the mandrel to engage the perimeter of said tubular support.

In-testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM H. GATES.

Witnesses 2 FRANK H. ALL N, MAY F. RITCHIE. 

